Fig. 2
From: Intracranial vessel wall MRI: a review of current indications and future applications
a 3D axial T1-weighted image showing a large internal carotid artery unruptured aneurysm (white arrow). b 3D axial T1-weighted post-contrast image showing enhancement of the aneurysm wall, concerning for active inflammation and instability. c 3D axial T1-weighted post-contrast image after placement of a flow-diverting stent, which has not yet occluded the aneurysm, but has created a small area of enhancement remote from the aneurysm (white arrow), that has been reported after flow-diverting stent placement presumed to be related to local inflammation or thrombosis. d, e A second patient who presented with thunderclap headache and was found to have an anterior communicating artery aneurysm (d, white arrow, digital subtraction angiogram, lateral projection), which had ruptured and caused subarachnoid hemorrhage (e, white arrow, CT noncontrast, axial). f 3D axial T1-weighted post-contrast image showing enhancement of the aneurysm wall, consistent with recent rupture